The highway through Spearfish Canyon is a favorite fall drive for many South Dakotans and out of state visitors. Jerry Boyer, who has tracked the progression of fall colors in Spearfish Canyon for more than 20 years, predicts Wednesday will be the peak day to view the full rhapsody of fall colors — especially the reds of the sumac, nanny berry, wild grape and ivy. But beware the alluring red leaves near the ground; they are poison ivy.

John Mitchell visited the canyon this past weekend. Here are some of his photos.